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Y J. H. GREEN.

f SBALING RING. No. 455,397. Patented July 7,1891.

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l TUNITED STATES PAT-ENTV OFFICE.

JOHN H. GREEN, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TO WALTERR. BEARD AND EDGAR C. HEARD, BOTH OF SAME PLACE.

SEALlNG-RING.

SPECIFICATION forming part of Letters Patent No. 45.5,397, dated July 7,1891.

Application led December 8, 1890. Serial No. 373,854. (No model.)

To all whom, t i12/ty concern:

Be it known that I, JOHN H. GREEN, of Indianapolis, county of Marion,and State of Indiana,havei`nvented certain new and useful Improvementsin Sealing-Rings; and 'I do hereby 'declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, in

. which like figures refer to like parts.

ing description. IS

My invention relates to the construction of devices for sealing thejoint between the cover and body of a hospital or chamber vessel andwill be understood from the follow In the drawings, Figure l is avertical sectional view of a vessel-cover with my device in place. Fig.2 is a sectional view through the center of a Inodied form of the ring.

In detail, 1 is the vessel, which may be made of any convenient size,shape, or material.

2 is the cover, having an'annular groove 3, its area comprising a littlemore than onehalf of a circle, which is formed in the under side of thecover between its inner edge and the inner wall of the vessel; Thesealingring is composed of a body portion 4, preferably circular, and alateral Vthin flange 5, the upper part of the body adapted to iitclosely into the groove 3, formed in the cover, and the latter, beingsomewhat in excess of one-half of a circle, will be narrower at itsopening than inthe center,and the elastic body of the spring will haveto be slightly compressed, so as to Y spring it into the channel of thegroove, and it willthen be heldin the walls of .the groove and will notreadily slipout.` This ring is thus securely connected to the cover, andwhen the latter is lifted the ring will comeaway with it, and thisallows the lower halt' of the vessel to be made in the ordinary form, sothat a cover of Vmy construct-ionfwith a sealing-ring attached isadapted to tit any circular vessel of similar diameter. ...The lateralflange 5 ot' the ring makes an elastic cushion between the surface ofthescover and the top edge of the vessel, preventing any noise orbreakage and makinga close join t, thus preventing any gases, vapors, oreffluvia from escaping from the vessel into the room, and the ring beingsecured in this way is readily detached by 5o the hand of the operatorwhen it is desired to thoroughly cleanse all parts of the vessel.

In Athe form ofthe ring shown in Fig. 2 the lower half of the body ofthe ring is tapering, forming a lug which lits closely against the f; 5side ofi the vessel all round, and. in either of the forms shown thering is closely attached to the cover in the same manner and has theSame lateral flange, the only difference being in the extension of thelower part of the body 6o of the ring.

What I claim as myinvention, and desire to secure by Letters Patent, isthe following:

`l. A sealing-ring composed of a roundedpart provided with a lateralliange and a projection below such flange, in combination with a vesselor cover having an annular groove in its under side, such groove beingin section angularly greater than a half-circle, the ring held inplaceby the edges of such groove, 7o substantially as described.

2. A sealing-ring composedof a rounded part providedwith a lateralflange and a portion extending below such flange, the rounded partadapted to iit in a groove formed on the under side of a vessel-cover,such groove being in section angularly greater than a half Acircle, thering held in place by thepressure ot' the edges of the groove,substantially as shown and described. f

Iny witness whereof I-havehereunto set In y hand this 4th day ofDecember, 1890.

JOHN H. GREEN.

,. l/Vitnesses: Y Y f H. D. NEALY,

E. BGRIFFiTH.

